REACTOR APPARATUS AND TREATMENT FOR FLUID MATERIAL

    公开(公告)号:JPH10309457A

    公开(公告)日:1998-11-24

    申请号:JP11332098

    申请日:1998-04-23

    Applicant: BASF AG

    Abstract: PROBLEM TO BE SOLVED: To provide a reactor apparatus and a method for treating fluid material in which temperature is measured in the representative conditions in the tubular reactors. SOLUTION: The reactor apparatus comprises both a tubular reactor equipped with a temperature measuring unit and a tubular reactor unequipped with the temperature measuring unit. The tubular reactors are set up so that the mass of solid particles to be introduced is directly proportional to the free cross-sectional area of the respective tubular reactors and flow resistance or pressure drop in the tubular reactors, and accordingly average rectilinear velocity are identical when gas flow rate being proportional to the free cross-sectional area is conducted. Concretely, the above- mentioned pressure drop is adjusted by fines fraction of the solid particles in accordance with the following formula. mfines =mtot (Pm -PI)/(P2 -P1 ) (in formula, mfines denotes mass of fines fraction. mtot denotes total mass of solid particle and fines fraction. Pm denotes average pressure drop in tubular reactor unequipped with temperature measuring unit. P1 denotes pressure drop in tubular reactor equipped with temperature measuring unit in the case of filling solid particles. P2 denotes pressure drop in tubular reactor which is equipped with temperature measuring unit and is filled with fines fraction).

    3.
    发明专利
    未知

    公开(公告)号:DE19717165A1

    公开(公告)日:1998-10-29

    申请号:DE19717165

    申请日:1997-04-23

    Applicant: BASF AG

    Abstract: Reactor arrangement comprises at least two tubular reactors filled with solid particles, at least one reactor containing a temperature measuring device. The novelty is that the tubular reactors are arranged so that the ratio of the composition of the solid particles to the free cross-sectional surfaces of each reactor as well as the pressure loss, measured by passing an inert gas proportionally transversal to the free cross-sectional, are equal over each tubular reactor. Also claimed is a process for treating fluid compositions with the production and consumption of thermal energy using the above reactor arrangement.

    7.
    发明专利
    未知

    公开(公告)号:DE59609045D1

    公开(公告)日:2002-05-16

    申请号:DE59609045

    申请日:1996-09-26

    Applicant: BASF AG

    Abstract: A process for the rectification and sepn. of unsatd. carboxylic acids (I) from the solvents in which (I) are absorbed after the synthesis reaction. The process involves interrupting the rectification and flushing out the rectification column with basic soln.

    8.
    发明专利
    未知

    公开(公告)号:DE59602784D1

    公开(公告)日:1999-09-23

    申请号:DE59602784

    申请日:1996-09-26

    Applicant: BASF AG

    Abstract: A process for the prodn. of (1-4C alkyl) (meth)acrylate esters (AM/AE) from esters of formula (I) and opt. esters of formula (II), in which R = H or Me; R , R = 1-4C alkyl; n = 0 or more. The process comprises reaction in the liq. phase under reduced pressure in presence of acid, with continuous removal of cleavage prods. Also claimed is a process for the prodn. of (AM/AE) by the acid-catalysed esterification of 1-4C alkanols with (meth)acrylic acid, in which by-prods. (I) and (II) are sepd. from the prod. mixt. and subjected to the above cleavage process, and the cleavage prods. are continuously removed and returned to the esterification process.

    9.
    发明专利
    未知

    公开(公告)号:DE59505830D1

    公开(公告)日:1999-06-10

    申请号:DE59505830

    申请日:1995-09-30

    Applicant: BASF AG

    Abstract: In the sepn. of a di(meth)acrylate (I) of a 4-6 C alkandiol (II) from a mixt. of (II), the mono(meth) acrylate (III) and (I) by extn. with an organic solvent (IV) in the presence of water, the mixt. contg. (I) is supplied to the middle of an extn. column and water and (V) are passed through the column in countercurrent. Also claimed is the prepn. (III), esp. butan-1,4-diol monoacrylate (IIIA).

    10.
    发明专利
    未知

    公开(公告)号:DK0706990T3

    公开(公告)日:1999-02-08

    申请号:DK95115503

    申请日:1995-09-30

    Applicant: BASF AG

    Abstract: In the prepn. of a mono(meth)acrylate (I) of a 4-6 C alkandiol (II) from an aq. soln. contg. (I) and (II) by solvent extn., the organic solvent used for extn. is selected from esters (III) of 1-4 C alkanecarboxylic acids and 1-5 C alkanols, simple and mixed 4-8 C dialkyl ethers (IV) and mixts. of these. Also claimed is a method of prepn. and sepg. (I).

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